SOLUTION: A group of 50 total freshman and sophomores took a science test . The average score of the 35 freshmen was 85. The 15 sophomores scored an average of 75 . What was the average for

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Question 953288: A group of 50 total freshman and sophomores took a science test . The average score of the 35 freshmen was 85. The 15 sophomores scored an average of 75 . What was the average for all students who took the test
Answer by aYummyNoodle(10) About Me  (Show Source):
You can put this solution on YOUR website!
We can multiply 35 by 85 to get the total score of all the freshmen:
35%2A85=2975
We can multiply 15 by 75 to get the total score of all the sophomores:
15%2A75=1125
We can add both totals together to get the total score for all 50 students:
2975%2B1125=4100
Now we can divide 4100 by 50 to get the average for all 50 students:
4100%2F50=82
So the average for all students who took the test is 82.